(69988) 1998 WA31

(69988) 1998 WA31
Discovery
Discovered by Marc W. Buie
Discovery date 18 November 1998
Designations
MPC designation (69988) 1998 WA31
TNO
2:5 resonance[1]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 3714 days (10.17 yr)
Aphelion 78.463 AU (11.7379 Tm)
Perihelion 31.535 AU (4.7176 Tm)
54.999 AU (8.2277 Tm)
Eccentricity 0.42663
407.89 yr (148980 d)
43.430°
 0m 8.699s / day
Inclination 9.4748°
20.817°
309.41°
Earth MOID 30.5307 AU (4.56733 Tm)
Jupiter MOID 26.5469 AU (3.97136 Tm)
Physical characteristics
Dimensions 139 km[3]
0.09 (assumed)
7.4

    (69988) 1998 WA31, also written as (69988) 1998 WA31, is a trans-Neptunian object that resides in the Kuiper belt.[4] It was discovered on 18 November 1998 by Marc W. Buie at the Kitt Peak National Observatory.

    It is in a 2:5 orbital resonance with the planet Neptune.[1]

    References

    1. 1 2 Marc W. Buie. "Orbit Fit and Astrometric record for 69988" (2000-12-28 using 22 of 24 observations). SwRI (Space Science Department). Retrieved 2009-01-29.
    2. "JPL Small-Body Database Browser: 69988 (1998 WA31)". NASA/Jet Propulsion Laboratory. Retrieved 6 April 2016.
    3. Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2009-01-29.
    4. "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 2009-01-29.

    External links


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